Features: `BiCMOS Version of UC3846 Family
`1.4-mA Maximum Operating Current
`100-A Maximum Startup Current
` ±0.5-A Peak Output Current
`125-ns Circuit Delay
` Easier Parallelability
` Improved Benefits of Current Mode Control
Pinout
Specifications
|
UCx806 |
UNIT |
| Supply voltage, VIN |
VIN, low impedance |
15 |
V |
| Supply current, IIN |
VIN, high impedance |
25 |
mA |
| Output supply voltage |
VC |
18 |
V |
| Output current |
Continuous source or sink |
± 200 |
mA |
| Gate drive |
± 500 |
| SYNC |
± 30 |
| COMP |
± 10 to −(self-limiting) |
| Analog input voltage range |
CS−, CS+, NI, INV, SHUTDOWN |
−0.3 to (VIN + 0.3) |
V |
| Storage temperature, Tstg |
−65 to 150 |
|
| Operating temperature, TJ |
−55 to 150 |
|
| Lead temperature, Tsol, 1,6 mm (1/16 inch) from case for 10 seconds |
300 |
|
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltages are with respect to GND. Currents are positive into and negative out of, the specified terminal.
DescriptionThe UCC3806 family of BiCMOS PWM controllers offers exceptionally improved performance with a familiar architecture. With the same block diagram and pinout of the popular UC3846 series, the UCC3806 line features increased switching frequency capability while greatly reducing the bias current used within the device. With a typical startup current of 50 A and a well defined voltage threshold for turn-on, these devices are favored for applications ranging from off-line power supplies to battery operated portable equipment.
Dual high-current, MOSFET driving outputs and a fast current sense loop further enhance device versatility. All the benefits of current mode control including simpler loop closing, voltage feed-forward, parallelability with current sharing, pulse-by-pulse current limiting, and push/pull symmetry correction are readily achievable with the UCC3806 series.
These devices UCC3806 are available in multiple package options for both through-hole and surface mount applications; and in commercial, industrial, and military temperature ranges.
The UCC3806 is specified for operation from −55 to 125, the UCC2806 is specified for operation from −40 to 85 , and the UCC3806 is specified for operation from 0 to 70.
UCC1806 Data Sheet
